marsh elder(redirected from Iva annua)
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Related to Iva annua: marsh elder
Any of several North American herbs or shrubs of the genus Iva of the composite family, often growing in salt marshes and having nodding, greenish flower heads.
(Plants) any of several North American shrubs of the genus Iva, growing in salt marshes: family Asteraceae (composites). Compare elder2
any of various composite plants of the genus Iva that grow in salt marshes.
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|Noun||1.||marsh elder - any of various coarse shrubby plants of the genus Iva with small greenish flowers; common in moist areas (as coastal salt marshes) of eastern and central North America|
genus Iva - small genus of American herbs or shrubs; in some classifications placed in a separate family Ambrosiaceae
burweed marsh elder, false ragweed, Iva xanthifolia - tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever